count number of occurrences of character in string
public class CountStringOccurence { public static void main(String[] args) { int count= countOccurences("aaassssddadad",'s'); System.out.println(count); } private static int countOccurences(String word, char character){ int count = 0; for(int i = 0; i < word.length(); i++){ if(word.chartAt(i) == character){ count++; } } return count; } }
count characters in string
# count characters iterative def count_chars(s) count = Hash.new(0) s.split("").each do |x| count[x] += 1 end count end # count characters functional s.chars.map {|c| [c, s.chars.count(c)] }.to_h
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